Images are not shown on mobile

The images in the different tabs on this page are only shown on desktop. Over ons – DOGsFRIEND

When opening the webpage on mobile the images are not shown.
Can someone take a look at it to know what is wrong.
(Brickx 1.9.2)

Maybe it’s because of the height? I see you are limiting the height of the tab content in the mobile version.

I have not set height limit.
Could I give you some access to a staging site for looking at the problem in depth?